Question

Certain sounds are not audible to us even if they are loud . Explain

Answer 1

Answer:

Because they are of less.frequencyi.e. less than 20 Hz. Those type of sounds are termed as infrasonic sound

Answer 2

Explanation:

this is because our ear has an audible range .In this range one can hear.if the sound is less or more than this range then we cannot hearr it. this range varies from 20hz to 20khz

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